[1]LUO Jia,SHENG Jiandong,WANG Yongxu,et al.Effects of Different Organic Fertilizers on Soil Salinity, Nutrients and Cotton Yield on Salt-Affected Land[J].Research of Soil and Water Conservation,2016,23(03):48-53.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 03
Page number:
48-53
Column:
Public date:
2016-06-28
- Title:
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Effects of Different Organic Fertilizers on Soil Salinity, Nutrients and Cotton Yield on Salt-Affected Land
- Author(s):
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LUO Jia, SHENG Jiandong, WANG Yongxu, GUO Yang, CHEN Bolang
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College of Grassland and Environment Sciences, Xinjiang Agricultural University, Urumqi 830052, China
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- Keywords:
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organic fertilizer; salt-affected land; soil salinity; soil nutrients; cotton yield
- CLC:
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S141;S153;S156.4
- DOI:
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- Abstract:
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In order to analyze and compare impacts of different organic fertilizers on soil salinization reduction and fertility improvement, field experiments were carried out in salt-affected land to study the effects of different organic fertilizers on the total salt content, soil fertility and cotton yield. Results showed that impact of each organic fertilizer on soil salinity was the best at the boll opening stage, which was especially obvious for the dregs of fat treatment in 30—90 cm depth (i.e., 69.55% lower than the control). No significant difference in cotton production was observed when applying the same amount of fertilizer, no matter what types of organic manure and chemical fertilizer were applied. Application of different organic fertilizers could improve each soil fertility index with various degrees. The use of dregs of fat could benefit accumulations of both soil organic matter and available nitrogen in cotton fields. Compared with CK, soil organic matter in the top layer (0—30 cm) increased by 18.78%~36.85%, while available nitrogen at seedling stage increased by 32.70%~35.90%. Organic fertilizer could also increase available phosphorus with various degrees. Compared with CK, in the top layer(0—30 cm), the available phosphorus contents of treatments with sheep manure and dregs of fat increased by 27.20%~47.14% and 4.80%~38.57% at different growing stages, respectively. Sheep manure has a positive effect on the release of soil available potassium at the seedling stage, the contents of available potassium increased by 5.20%~70.94% comparing with CK.